package com.wenhai.configuration.metadata;
/**
 * @Author:wenhai
 * @Description: Bean 配置元信息示例
 * @Date:2020/4/3
 */
public class BeanConfigurationMetadataDemo {
    public static void main(String[] args) {
        String s = null;
        System.out.println(s != "");
        s = "";
        System.out.println(s != "");
    }
}
